Installation Guide
69-2285EFS—03 18

TrueSTEAMhasinternalsystemdiagnosticsthatmonitorsystemoperation,maintenanceschedules,

andfaults.Ifasystemfaultisdetected,thesystemwillattempttorecoveritselfuptofivetimesina

24hourperiod.Ifunabletorecoverinthat time,theredServicelightwillactivate.

IftheTrueSTEAMServicelightisblinking,asystemfaulthas occurredfromwhichthehumidi-

fiercannotrecoverbyitself.Thetablebelow showsthepossiblefaults,alongwithstepsto fix

TrueSTEAM.

IftheredServicelightison,countthe numberofblinksbetweenpauses.Refertothe table

belowforthefaultsignifiedbythenumber ofblinksthatoccur.Toclearthefault,pressandhold

the GO button for 5 seconds.

Press/hold the GO button to clear the Service Timer light (i.e. the Cleaning Required light).

no. of
red
light
Blinks
fault description auto-
recoverable?
steps to fix
performed only by professional hVac technician
1 Water/Heater temper-
ature sensor failed. Yes,TrueSTEAM
will reset if fault
no longer exists in
1 hour.
• UnplugTrueSTEAMandplugbackin.
• PresstheGObutton.
• Iffaultreturns,replaceTrueSTEAM.
2 Water sensors failed. Yes,TrueSTEAM
will reset if fault
no longer exists
in 1 hour. Will
attempt to reset
itself 5 times in 24
hours.
• UnplugTrueSTEAMandremovecover.
• Disconnectwaterlevelsensorwiring,removescreenand
lift snap-hinge clamp.
Remove water sensor assembly.
• Replacewatersensor(#50027998-001).
• Reassemblethesensorassemblyintheunit,replacesnap-
hinge,andreattachandsecurecover.
• PlugunitbackinandpresstheGObutton.
3 Failure to fill tank
with water. Yes,systemwill
return to “Ready”
if fault no longer
exists in 3 hours.
• Ensureinletwaterison.
• Checkforleaksaroundthetanksealandsolenoid.
• Turnoffwatersupplyandreplacein-linewaterfilter.
• Press/holdGObuttonuntiltheredServicelightturnsoff.
• Iftankstillfailstofill,presstheDRAINbutton (ifunitfailsto
drain,unplugunitandmakesurewaterintankis cool).
• Followthisguide’scleaningstepsintheMaintenance
section. Ensure you have a firm grip of the tank prior to
releasingthetank,especiallyifwaterispresent.
• Clearanyexcessdebrisfromthetank’sbottomorificetothe
solenoid.
• Reassembletankandplugunitbackin.PresstheGO button.
• Ifwaterstillfailstofillintothetank, replacethesolenoid
valve(#50027997-001).
trouBleshootInG
M24901